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Table 4-17 defines the de – CANOGA PERKINS 2240 Fiber Optic Modem User Manual

Page 70

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Chapter 4 Data Interfaces

2240 Fiber Optic Modem User Manual

Programmable Buffered Interface/Model P53

70

Figure 4-6 Board Layout for Programmable Buffered Interface

Table 4-17. Delay Times for Programmable Buffered Interface

SW1 Position

(O)pen (C)losed

Delay Time

P53

1

2

3

4

C

C

C

C**

20 ns

O

C

C

C

30 ns

C

O

C

C

40 ns

O

O

C

C

50 ns

C

C

O

C

60 ns

O

C

O

C

70 ns

C

O

O

C

80 ns

O

O

O

C

90 ns

C

C

C

O

100 ns

O

C

C

O

110 ns

C

O

C

O

120 ns

O

O

C

O

130 ns

C

C

O

O

140 ns

O

C

O

O

150 ns

C

O

O

O

160 ns

O

O

O

O

170 ns

** Default setting as shipped

W8

W9

W7

W14 W13 W12

-6V +/-6V +6V

100 ohm

CHASSIS GND

W2

W1

SHORT

J3

RSTBIAS

OFF ON

KG

NORM

W18 W17

W6

W5

W19 W20

Test

GND

DSR

W16

W15

Dl1

Sw1

W10

W11

INVERT

NORM

KG OUT

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